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116 lines
5.1 KiB
C
116 lines
5.1 KiB
C
/**
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* Copyright 2013-2022 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsRAN is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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/******************************************************************************
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* File: pdsch_nr.h
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*
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* Description: Physical downlink shared channel for NR
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*
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* Reference: 3GPP TS 38.211 V15.8.0 Sec. 7.3.1
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*****************************************************************************/
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#ifndef SRSRAN_PDSCH_NR_H
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#define SRSRAN_PDSCH_NR_H
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#include "srsran/config.h"
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#include "srsran/phy/ch_estimation/dmrs_sch.h"
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#include "srsran/phy/modem/evm.h"
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#include "srsran/phy/modem/modem_table.h"
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#include "srsran/phy/phch/phch_cfg_nr.h"
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#include "srsran/phy/phch/regs.h"
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#include "srsran/phy/phch/sch_nr.h"
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#include "srsran/phy/scrambling/scrambling.h"
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/**
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* @brief PDSCH encoder and decoder initialization arguments
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*/
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typedef struct SRSRAN_API {
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srsran_sch_nr_args_t sch;
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bool measure_evm;
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bool measure_time;
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uint32_t max_prb;
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uint32_t max_layers;
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} srsran_pdsch_nr_args_t;
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/**
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* @brief PDSCH NR object
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*/
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typedef struct SRSRAN_API {
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uint32_t max_prb; ///< Maximum number of allocated prb
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uint32_t max_layers; ///< Maximum number of allocated layers
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uint32_t max_cw; ///< Maximum number of allocated code words
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srsran_carrier_nr_t carrier; ///< NR carrier configuration
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srsran_sch_nr_t sch; ///< SCH Encoder/Decoder Object
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uint8_t* b[SRSRAN_MAX_CODEWORDS]; ///< SCH Encoded and scrambled data
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cf_t* d[SRSRAN_MAX_CODEWORDS]; ///< PDSCH modulated bits
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cf_t* x[SRSRAN_MAX_LAYERS_NR]; ///< PDSCH modulated bits
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srsran_modem_table_t modem_tables[SRSRAN_MOD_NITEMS]; ///< Modulator tables
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srsran_evm_buffer_t* evm_buffer;
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bool meas_time_en;
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uint32_t meas_time_us;
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srsran_re_pattern_t dmrs_re_pattern;
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uint32_t nof_rvd_re;
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} srsran_pdsch_nr_t;
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/**
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* @brief Groups NR-PDSCH data for reception
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*/
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typedef struct {
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srsran_sch_tb_res_nr_t tb[SRSRAN_MAX_TB]; ///< SCH payload
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float evm[SRSRAN_MAX_CODEWORDS]; ///< EVM measurement if configured through arguments
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} srsran_pdsch_res_nr_t;
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SRSRAN_API int srsran_pdsch_nr_init_enb(srsran_pdsch_nr_t* q, const srsran_pdsch_nr_args_t* args);
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SRSRAN_API int srsran_pdsch_nr_init_ue(srsran_pdsch_nr_t* q, const srsran_pdsch_nr_args_t* args);
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SRSRAN_API void srsran_pdsch_nr_free(srsran_pdsch_nr_t* q);
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SRSRAN_API int srsran_pdsch_nr_set_carrier(srsran_pdsch_nr_t* q, const srsran_carrier_nr_t* carrier);
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SRSRAN_API int srsran_pdsch_nr_encode(srsran_pdsch_nr_t* q,
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const srsran_sch_cfg_nr_t* cfg,
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const srsran_sch_grant_nr_t* grant,
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uint8_t* data[SRSRAN_MAX_TB],
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cf_t* sf_symbols[SRSRAN_MAX_PORTS]);
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SRSRAN_API int srsran_pdsch_nr_decode(srsran_pdsch_nr_t* q,
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const srsran_sch_cfg_nr_t* cfg,
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const srsran_sch_grant_nr_t* grant,
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srsran_chest_dl_res_t* channel,
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cf_t* sf_symbols[SRSRAN_MAX_PORTS],
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srsran_pdsch_res_nr_t* res);
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SRSRAN_API uint32_t srsran_pdsch_nr_rx_info(const srsran_pdsch_nr_t* q,
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const srsran_sch_cfg_nr_t* cfg,
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const srsran_sch_grant_nr_t* grant,
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const srsran_pdsch_res_nr_t* res,
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char* str,
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uint32_t str_len);
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SRSRAN_API uint32_t srsran_pdsch_nr_tx_info(const srsran_pdsch_nr_t* q,
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const srsran_sch_cfg_nr_t* cfg,
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const srsran_sch_grant_nr_t* grant,
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char* str,
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uint32_t str_len);
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#endif // SRSRAN_PDSCH_NR_H
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